JPS63266283A - Small-sized high speed air valve - Google Patents
Small-sized high speed air valveInfo
- Publication number
- JPS63266283A JPS63266283A JP9929487A JP9929487A JPS63266283A JP S63266283 A JPS63266283 A JP S63266283A JP 9929487 A JP9929487 A JP 9929487A JP 9929487 A JP9929487 A JP 9929487A JP S63266283 A JPS63266283 A JP S63266283A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- float
- case
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000007664 blowing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は水道配管に取付けて使用され、水道配管内に導
入された空気を速やかに排気するための小型急速空気弁
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a small rapid air valve that is attached to a water pipe and used to quickly exhaust air introduced into the water pipe.
［従来技術］
この種の空気弁としては、同一出願人に係る特公昭５７
−５６６２９号公報に開示された構成のものが公知であ
る。この公知の空気弁においては、フロート弁室内に、
球形を呈する第１のフロート弁と、環体を呈する第２の
フロート弁との組合わせて収納した構造であり、従来の
球形のフロート弁だけをフロート弁室内に収納した空気
弁に比べて遥かに小形化できる点で優れている。[Prior art] This type of air valve is known from Japanese Patent Publication No. 57, filed by the same applicant.
The configuration disclosed in Japanese Patent No. 56629 is known. In this known air valve, inside the float valve chamber,
It has a structure in which a spherical first float valve and an annular second float valve are housed in combination.Compared to conventional air valves in which only a spherical float valve is housed in the float valve chamber, it is much more effective. It is superior in that it can be made smaller.
［発明が解決しようとする問題点］
しかしながら、前記公知の空気弁においては、フロート
弁室内に収納された第１及び第２のフロート弁は、フロ
ート弁室内に導入される空気が直接作用する位置に収納
されているため、及びフロート弁室自体の大きさに限度
があるため、−挙に大伍の空気を排気することが困難で
あり、その様な大容量の空気が導入されるような水道配
管、即ち水道本管に取付けた場合に、排気残しが生ずる
と言う問題点を有している。[Problems to be Solved by the Invention] However, in the above-mentioned known air valve, the first and second float valves housed in the float valve chamber are located at positions where the air introduced into the float valve chamber directly acts. Because the float valve chamber itself has a limited size, it is difficult to exhaust a large amount of air at once, When installed in water pipes, ie, water mains, there is a problem in that residual exhaust air remains.
そのような排気残しの問題点は、フロート弁室の容量を
大きくすることで解決できるが、空気弁自体が太き（な
るため、使用材料が多くなり、コストアップにつながる
だけでなく、持ち運び及び商品管理の面で問題点が生ず
ることになる。The problem of such exhaust gas remaining can be solved by increasing the capacity of the float valve chamber, but the air valve itself becomes thicker (which means more materials are used, which not only increases costs but also makes it difficult to carry). Problems will arise in terms of product management.
［問題点を解決するための手段］
前記問題点を解決するための具体的手段として本発明は
、弁箱の上部に排気口を有する弁蓋をガスケットを介し
て着脱自在に取付け、前記弁箱内に弁体ケースを吊垂状
態に配設し、該弁体ケース内に上下動自在に遊動弁体と
フロート弁とフロートケースとを収納し、前記弁体ケー
スは上部寄りに複数の大径の窓孔を形成し、底部寄りに
小孔を設けると共に内側面に縦方向に複数のガイド部を
設けた構成にし、前記遊動弁体は円柱状に形成すると共
に、一側縁寄りに小径の排気口を貫通して設け、該排気
口の下部に弁座を突出して設けると共に、該弁座に近接
して一対のガイド杆を下向きに取付け、該ガイド杆に対
応し且つ遊嵌するガイド孔を前記フロート弁に設け、該
フロート弁を包有させ且つ多数の窓孔を有する前記フロ
ートケースを前記遊動弁体に取付けたを特徴とする小型
急速空気弁を提供するものであって、前記弁箱内に弁体
ケースを設け、該弁体ケース内に上下動自在に、遊動弁
体と、フロート弁と、フロートケースとを配設すること
で、更に大容量の一気の排気が可能になり、小型であり
ながら大容量排気に適用できるのである。[Means for Solving the Problems] As a specific means for solving the above-mentioned problems, the present invention provides a method in which a valve cover having an exhaust port is removably attached to the upper part of the valve box via a gasket, and A valve body case is disposed in a hanging state, and a floating valve body, a float valve, and a float case are housed in the valve body case so as to be able to move up and down, and the valve body case has a plurality of large diameters near the top. A window hole is formed, a small hole is provided near the bottom, and a plurality of guide sections are provided in the vertical direction on the inner surface. A guide hole provided through the exhaust port, with a valve seat protruding from the lower part of the exhaust port, and a pair of guide rods facing downward adjacent to the valve seat, which correspond to and fit loosely into the guide rods. is provided in the float valve, and the float case enclosing the float valve and having a large number of window holes is attached to the floating valve body, By providing a valve body case inside the box and arranging the floating valve body, float valve, and float case so as to be able to move up and down within the valve body case, even larger volumes can be exhausted at once. Despite its small size, it can be applied to large-capacity exhaust.
［実施例］
次に本発明を図示の実施例により更に詳しく説明すると
、１は弁箱であり、該弁箱の上部に着脱自在に弁蓋２が
施蓋され、該弁蓋の略中央部に比較的大径の排気口３が
設けられている。前記弁箱１内には弁体ケース４が吊垂
状態に配設され、該弁体ケース４は上部周縁に７ランジ
部５を有し、該フランジ部を介して吊垂状態に配設され
る。そして、この弁体ケース４は前記フランジ部５に近
接した胴部に複数の大径の窓孔６を備えると共に、底部
側にも複数の小孔７を備え、更に内側面に柱状のガイド
部８が複数条（少なくとも３条）形成されている。[Example] Next, the present invention will be described in more detail with reference to the illustrated embodiment. Reference numeral 1 denotes a valve box, and a valve cover 2 is detachably attached to the upper part of the valve box, and a substantially central portion of the valve cover is attached. A relatively large-diameter exhaust port 3 is provided in the exhaust port 3 . A valve body case 4 is disposed in a suspended state within the valve box 1, and the valve body case 4 has seven flange portions 5 on the upper periphery, and is disposed in a suspended state through the flange portion. Ru. The valve body case 4 has a plurality of large-diameter window holes 6 in the body close to the flange 5, a plurality of small holes 7 on the bottom side, and a columnar guide portion on the inner surface. 8 is formed in a plurality of rows (at least three rows).
この弁体ケース４内には、遊動弁体９とフロート弁１０
及びフロートケース１１が上下動可能に収納される。こ
の場合の遊動弁体９とフロート弁１０とは、発泡体例え
ばニトリルゴムに発泡剤を入れて独立気泡を抱有させた
材、料で形成したものであり、遊動弁体９は全体的に円
柱状を呈し、上面は前記弁蓋２の排気口３に嵌まるよう
砲台９ａに形成し、一側縁寄りに小径の排気口１２を設
け、該排気口は弁座１３と弁座受１４とで構成され、弁
座部分を遊動弁体の下面に僅かに突出して設け、該弁座
１３の近傍に一対のガイド杆１５が下向きに取付けであ
る。Inside this valve body case 4, there is a floating valve body 9 and a float valve 10.
A float case 11 is housed in a vertically movable manner. The floating valve body 9 and the float valve 10 in this case are made of a material such as a foamed material such as nitrile rubber containing a foaming agent to contain closed cells. It has a cylindrical shape, and its upper surface is formed into a turret 9a so as to fit into the exhaust port 3 of the valve lid 2, and a small-diameter exhaust port 12 is provided near one side edge, and the exhaust port is connected to the valve seat 13 and the valve seat holder 14. A valve seat portion is provided to slightly protrude from the lower surface of the floating valve body, and a pair of guide rods 15 are attached downwardly near the valve seat 13.
又、前記弁座１３と対称位置の遊動弁体の下面に、弁座
１３の突出と略同じ高さに突出部１６が形成しである
前記フロート弁１０は略逆台形に形成され、前記ガイド
杆１５に対応する位置に一対のガイド孔１１が設けられ
、該ガイド孔に沿って下方部分にスリット１８が夫々設
けである。そして、前記ガイド杆１５が前記ガイド孔１
７に遊嵌し、しかも前記スリット１８の形成範囲におい
て、フロート弁１０が傾斜できるようになっている。The float valve 10 has a protrusion 16 formed on the lower surface of the floating valve body at a position symmetrical to the valve seat 13 at substantially the same height as the protrusion of the valve seat 13. A pair of guide holes 11 are provided at positions corresponding to the rods 15, and slits 18 are provided in the lower portions along the guide holes. Then, the guide rod 15 is connected to the guide hole 1.
The float valve 10 is loosely fitted into the slit 7 and can be tilted within the range in which the slit 18 is formed.
前記フロートケース１１は、多数の窓孔１９を有する籠
状を呈し、前記フロート弁１０を収納した状態において
、前記遊動弁体９に取付けられる。従って、遊動弁体９
、フロート弁１０及びフロートケース１１は、−緒にな
って弁体ケース４内を上下動し、しかも遊動弁体９はガ
イド部８によって傾斜することなく、速やかに上下動す
るのである。尚、図中符号２０はガスケットであり、該
ガスケットは弁ｆｉ２のシールを兼ねた前記遊動弁体９
の弁座となる。又、２１はＯリング、２２はカバー、２
３はカバーに設けられた窓である。The float case 11 has a cage shape with a large number of window holes 19, and is attached to the floating valve body 9 in a state in which the float valve 10 is housed therein. Therefore, the floating valve body 9
, the float valve 10 and the float case 11 move up and down together in the valve body case 4, and the floating valve body 9 quickly moves up and down without being tilted by the guide portion 8. Incidentally, the reference numeral 20 in the figure is a gasket, and the gasket serves as a seal for the valve fi2.
Becomes the valve seat. Also, 21 is an O-ring, 22 is a cover, 2
3 is a window provided in the cover.
［動作の説明］
前記構成を有する空気弁において、水道配管内の空気が
弁箱１内に導入されたとき、特に大量の空気が導入され
ても、弁体ケース４の存在により、遊動弁体９及びフロ
ート弁１０が導入空気で直接吹き上げられることなく、
矢印ａで示したように、弁体ケース４の外側の空間を通
り、窓孔６から直接大径の排気口３を介して速やかに外
部に排気される。[Description of operation] In the air valve having the above configuration, when air in the water pipe is introduced into the valve box 1, even if a particularly large amount of air is introduced, the presence of the valve body case 4 prevents the floating valve body from moving. 9 and the float valve 10 are not blown up directly by the introduced air,
As shown by arrow a, the air passes through the space outside the valve body case 4 and is quickly exhausted to the outside through the window hole 6 directly through the large-diameter exhaust port 3.
弁箱１内に少量の空気が導入されたときには、第２図に
示したように、直ぐには排気されず、弁箱１内に徐々に
空気が溜まり、それによって弁箱内の水位を徐々に押し
下げる。この場合に、弁箱１内には水Ｃが一緒に入るか
又は予め溜まっており、この水Ｃは弁体ケース４に対し
て下部の小孔７から侵入し、フロートケース１１のフロ
ート弁１０を浮上らせ、その上面が弁座１３に当接して
小径の排気口１２を塞ぎ、その状態で更に遊動弁体９を
押し上げ、該遊動弁体９がガスケット２０に当接して排
気口３を塞ぎ、水Ｃの流出を防止している。この状態に
おいては、弁箱１内の気圧は外気圧よりも高いので、遊
動弁体９及びフロート弁１０は夫々ガスケット２０及び
弁座１３に吸着状態に位置し、排気されないようになっ
ている。そして、弁箱１内に溜まった空気が増えて、フ
ロート弁１０の下面又はそれよりも水位が下がったとき
に、第３図に示したように、フロート弁１０が徐々に傾
斜して、弁座１３との当接部に空間を生じさせ、矢印す
で示したように、小径の排気口１２から少量の空気を排
気し、内部の圧力が下がることによって、フロー］〜弁
１０及び遊動弁体９が自重により夫々弁座から離れて落
下し、前記窓孔６から大径の排気口３を介して速やかに
外部に排気する。When a small amount of air is introduced into the valve box 1, as shown in Fig. 2, the air is not immediately exhausted, but gradually accumulates inside the valve box 1, thereby gradually lowering the water level inside the valve box. Press down. In this case, water C enters the valve body 1 together or is collected in advance, and this water C enters the valve body case 4 through the small hole 7 at the bottom and enters the float valve 10 of the float case 11. is floated, and its upper surface contacts the valve seat 13 to block the small-diameter exhaust port 12. In this state, the floating valve body 9 is further pushed up, and the floating valve body 9 contacts the gasket 20 to close the exhaust port 3. This prevents water C from flowing out. In this state, the air pressure inside the valve box 1 is higher than the outside air pressure, so the floating valve body 9 and the float valve 10 are adsorbed to the gasket 20 and the valve seat 13, respectively, so that they are not exhausted. Then, when the air accumulated in the valve box 1 increases and the water level drops to or below the bottom surface of the float valve 10, the float valve 10 gradually tilts as shown in FIG. A space is created at the contact portion with the seat 13, a small amount of air is exhausted from the small-diameter exhaust port 12 as indicated by the arrow, and the internal pressure is lowered, resulting in a flow]~valve 10 and idler valve. The body 9 separates from the valve seat and falls due to its own weight, and is quickly exhausted to the outside through the window hole 6 and the large-diameter exhaust port 3.
この場合に、フロート弁１０は小型で軽量であり、且つ
弁箱１内の圧力が外気圧よりも高いが、弁座１６との吸
着当接位置が、端部側に近い位置であるため、フロート
弁１０自体の重量が梃の応用になって、他端部側が水位
の低下に伴って徐々に下がり、前記吸着当接位置の小径
の排気口１２を少しずつ解放することになり、続いてフ
ロート弁１０がガイド杆１５にガイドされて落下し、小
径の排気口１２が全開して内部の空気を排気するのであ
る。この時点では、前記遊動弁体９は、吸着状態が保持
されているが、弁箱内の圧力が低下することによって、
吸着が解放され自重及びフロート弁１０並びにフロート
ケース１１との１ｆｆｉが加わることによって落下する
ことになる。又、前記フロート弁１０の傾斜及び落下は
ガイド杆１５によって行われ、前記遊動弁体９及びフロ
ートケース１１は、弁体ケース４のガイド部８によって
ガイドされながら落下すので、それ等の位置がずれたり
、或は途中で引っ掛かることがなく、常に適正な状態に
位置し、その機能が失われることがないのである。In this case, although the float valve 10 is small and lightweight, and the pressure inside the valve box 1 is higher than the external pressure, the position of suction contact with the valve seat 16 is close to the end side. The weight of the float valve 10 itself acts as a lever, and the other end gradually lowers as the water level decreases, gradually opening the small-diameter exhaust port 12 at the suction abutting position, and then The float valve 10 is guided by the guide rod 15 and falls, and the small diameter exhaust port 12 is fully opened to exhaust the air inside. At this point, the floating valve body 9 is maintained in an adsorption state, but as the pressure inside the valve box decreases,
When the suction is released, it will fall due to its own weight and the addition of 1ffi from the float valve 10 and float case 11. Further, the float valve 10 is tilted and dropped by the guide rod 15, and the floating valve body 9 and the float case 11 fall while being guided by the guide portion 8 of the valve body case 4, so that their positions are fixed. It does not shift or get caught in the middle, is always in the correct position, and does not lose its function.
前記した通り、遊動弁体９のみを使用する場合に、その
遊動弁体が吸着力に抗して、自重で落下し得る重量と大
きさにしなければならず、そのために弁箱も大きくしな
ければならないが、前記したように逆台形のフロート弁
１０とを組合わせ、更に弁体ケース４とフロートケース
１１とを配設することで、遊動弁体を小形化しても、大
容量の排気が問単に行えるのである。特に、全体の大き
さは前記従来例のものと略同じであるが、排気Ｍは略４
倍以上に亘るものである。As mentioned above, when only the floating valve body 9 is used, the weight and size must be such that the floating valve body can resist the adsorption force and fall under its own weight, and for this purpose, the valve box must also be large. However, as described above, by combining the inverted trapezoidal float valve 10 and further arranging the valve body case 4 and the float case 11, even if the floating valve body is made smaller, a large volume of exhaust can be achieved. It's easy to do. In particular, although the overall size is approximately the same as that of the conventional example, the exhaust M is approximately 4.
This is more than twice that amount.
［発明の効果］
以上説明したように、本発明に係る小型急速空気弁は、
弁箱の上部に排気口を有する弁蓋をガスケットを介して
着脱自在に取付け、前記弁箱内に弁体ケースを吊垂状態
に配設し、該弁体ケース内に上下動自在に遊動弁体とフ
ロート弁とフロートケースとを収納し、前記弁体ケース
は上部寄りに複数の大径の窓孔を形成し、底部寄りに小
孔を設けると共に内側面に縦方向に複数のガイド部を設
けた構成にし、前記遊動弁体は円柱状に形成すると共に
、一側縁寄りに小径の排気口を貫通して設け、該排気口
の下部に弁座を突出して設けると共に、該弁座に近接し
て一対のガイド杆を下向きに取付け、該ガイド杆に対応
し且つ遊嵌するガイド孔を前記フロート弁に設け、該フ
ロート弁を包有させ且つ多数の窓孔を有する前記フロー
トケースを前記遊動弁体に取付けた構成にしたことによ
り、大量の空気が弁箱内に導入されても、大径の排気口
を介して急速に且つ一気に排気でき、小型でありながら
大容量の水道本管に接続して使用できるという優れた効
果を奏する。[Effects of the Invention] As explained above, the small rapid air valve according to the present invention has the following advantages:
A valve cover having an exhaust port is removably attached to the upper part of the valve box via a gasket, a valve body case is disposed in a suspended state within the valve body, and an idler valve is mounted within the valve body case so as to be able to move up and down. A body, a float valve, and a float case are housed, and the valve body case has a plurality of large-diameter window holes near the top, a small hole near the bottom, and a plurality of guide portions in the vertical direction on the inner surface. The floating valve body is formed in a cylindrical shape, and is provided with a small diameter exhaust port penetrating near one side edge, and a valve seat is provided protruding from the lower part of the exhaust port, and a valve seat is provided on the valve seat. A pair of guide rods are attached downwardly in close proximity to each other, guide holes corresponding to and loosely fitted to the guide rods are provided in the float valve, and the float case enclosing the float valve and having a large number of window holes is provided in the float valve. Due to the structure attached to the floating valve body, even if a large amount of air is introduced into the valve box, it can be quickly and all at once exhausted through the large diameter exhaust port, making it possible to use a small but large capacity water main. It has the excellent effect of being able to be used by connecting it to.
又、仝休を小型に形成できるので、安価に提供できるば
かりでなく、取扱及び保管管理等が容易になるという優
れた効果も奏する。In addition, since the receptacle can be made small, it can not only be provided at a low cost, but also has excellent effects such as ease of handling and storage management.
第１図は本発明に係る小型急速空気弁の断面図、第２図
及び第３図は同空気弁の動作状態を示す断面図、第４図
は第１図のＩＶ −ＩＶ線に沿う断面図である。
１・・・・・・弁１ｉ ２・・・・・・弁蓋
３・・・・・・大径の排気口 ４・・・・・・弁体ケー
ス５・・・・・・フランジ部 ６・・・・・・大径の
窓孔７・・・・・・小孔 ８・・・・・・ガイ
ド部９・・・・・・遊動弁体 １０・・・・・・フ
ロート弁１１・・・・・・フロートケース１２・・・・
・・小径の排気口１３・・・・・・弁座 １４
・・・・・・弁座受１５・・・・・・ガイド杆 １
６・・・・・・突出部１７・・・・・・ガイド孔
１８・・・・・・スリット１９・・・・・・窓孔
２０・・・・・・ガスケット２１・・・・・・０リ
ング ２２・・・・・・カバー２３・・・・・・窓
特許出願人 前沢給装工業株式会社
区
Ｏこ
区
Ｏつ
昧Fig. 1 is a sectional view of a small rapid air valve according to the present invention, Figs. 2 and 3 are sectional views showing the operating state of the same air valve, and Fig. 4 is a sectional view taken along line IV-IV in Fig. 1. It is a diagram. 1... Valve 1i 2... Valve lid 3... Large diameter exhaust port 4... Valve body case 5... Flange part 6 ......Large diameter window hole 7...Small hole 8...Guide portion 9...Floating valve body 10...Float valve 11. ...Float case 12...
...Small diameter exhaust port 13...Valve seat 14
... Valve seat support 15 ... Guide rod 1
6... Protrusion 17... Guide hole
18...Slit 19...Window hole
20...Gasket 21...0 ring 22...Cover 23...Window patent applicant Maesawa Kyuso Kogyo Co., Ltd.
Claims (2)
介して着脱自在に取付け、前記弁箱内に弁体ケースを吊
垂状態に配設し、該弁体ケース内に上下動自在に遊動弁
体とフロート弁とフロートケースとを収納し、前記弁体
ケースは上部寄りに複数の大径の窓孔を形成し、底部寄
りに小孔を設けると共に内側面に縦方向に複数のガイド
部を設けた構成にし、前記遊動弁体は円柱状に形成する
と共に、一側縁寄りに小径の排気口を貫通して設け、該
排気口の下部に弁座を突出して設けると共に、該弁座に
近接して一対のガイド杆を下向きに取付け、該ガイド杆
に対応し且つ遊嵌するガイド孔を前記フロート弁に設け
、該フロート弁を包有させ且つ多数の窓孔を有する前記
フロートケースを前記遊動弁体に取付けたことを特徴と
する小型急速空気弁。(1) A valve cover having an exhaust port is removably attached to the upper part of the valve box via a gasket, and a valve body case is arranged in a suspended state within the valve body, and can be moved up and down within the valve body case. A floating valve body, a float valve, and a float case are housed in the valve body case, and the valve body case has a plurality of large-diameter window holes formed near the top, a small hole near the bottom, and a plurality of vertical holes on the inner surface. The floating valve body is formed into a cylindrical shape, and a small diameter exhaust port is provided near one side edge thereof, and a valve seat is provided protruding from the lower part of the exhaust port. A pair of guide rods are mounted downward near the valve seat, guide holes corresponding to and loosely fitted to the guide rods are provided in the float valve, and the float has a large number of window holes that enclose the float valve. A small rapid air valve characterized in that a case is attached to the floating valve body.
泡体である前記１項記載の小型急速空気弁。(2) The small rapid air valve according to item 1, wherein the floating valve body and the float valve are made of nitrile rubber foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9929487A JPS63266283A (en) | 1987-04-22 | 1987-04-22 | Small-sized high speed air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9929487A JPS63266283A (en) | 1987-04-22 | 1987-04-22 | Small-sized high speed air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63266283A true JPS63266283A (en) | 1988-11-02 |
| JPH0472114B2 JPH0472114B2 (en) | 1992-11-17 |
Family
ID=14243617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9929487A Granted JPS63266283A (en) | 1987-04-22 | 1987-04-22 | Small-sized high speed air valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63266283A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2847058B2 (en) * | 1996-01-10 | 1999-01-13 | 前澤給装工業株式会社 | Air valve |
| JP4497604B2 (en) * | 1999-11-08 | 2010-07-07 | 旭有機材工業株式会社 | Air valve |
| JP3749653B2 (en) * | 2000-07-05 | 2006-03-01 | 角田鉄工株式会社 | Air valve |
-
1987
- 1987-04-22 JP JP9929487A patent/JPS63266283A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0472114B2 (en) | 1992-11-17 |
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